Portion of a shoe midsole



FIG. 1 is a front perspective view of a first embodiment of a portion of a shoe midsole showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a front perspective view of a second embodiment of a portion of a shoe midsole showing my new design;

FIG. 5 is a rear perspective view of the embodiment of FIG. 4; and,

FIG. 6 is a side view of the embodiment of FIG. 4.

The broken lines immediately adjacent to the shaded areas represent an unclaimed boundary of the design. The broken line showing of the two raised regions within the claimed region and the remainder of the shoe is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a shoe midsole, as shown and described. 